JPS6220131U

JPS6220131U -

Info

Publication number: JPS6220131U
Application number: JP11183585U
Authority: JP
Priority date: 1985-07-23
Filing date: 1985-07-23
Publication date: 1987-02-06

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の第１実施例の要部構成を示す
横断面図、第２図は第１図の―断面図、第３
図は本考案の第２実施例の要部構成を示す横断面
図、第４図は第３図の―断面図、第５図は従
来例の要部構成を示す横断面図、第６図は第５図
の―断面図、第７図は前記実施例及び従来例
のスワール比特性を示す線図、第８図は別の従来
例の要部構成を示す縦断面図、第９図は第８図の
Ｘ矢視図である。２……吸気弁、３……渦巻路、３ａ……天井壁
、４……吸気路、８，１０……流路制御部材、８
ｂ，１０ａ……底面、θ……下降傾斜角。 FIG. 1 is a cross-sectional view showing the main structure of the first embodiment of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, and FIG.
The figure is a cross-sectional view showing the main part structure of the second embodiment of the present invention, FIG. 4 is a cross-sectional view of FIG. 3, FIG. 5 is a cross-sectional view showing the main part structure of the conventional example, and FIG. is a sectional view of FIG. 5, FIG. 7 is a diagram showing the swirl ratio characteristics of the embodiment and the conventional example, FIG. 8 is a vertical sectional view showing the main part configuration of another conventional example, and FIG. FIG. 8 is a view taken along the X arrow in FIG. 8; 2... Intake valve, 3... Spiral path, 3a... Ceiling wall, 4... Intake path, 8, 10... Flow path control member, 8
b, 10a...bottom surface, θ...downward inclination angle.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

直線状の吸気路の下流側に吸気弁を取り巻く渦
巻路が連なる形状のヘリカル型吸気ポートを備え
た内燃機関の吸気装置において、機関回転速度の
増大に応じて渦巻路に突出する流路制御部材を設
け、該流路制御部材の底面を渦巻路への突出時、
渦巻路の天井壁に滑らかに連なり、かつ、前記天
井壁より周方向の下降傾斜角度が大きな形状に形
成したことを特徴とする内燃機関の吸気装置。 In an intake system for an internal combustion engine equipped with a helical intake port in which a spiral passage surrounding an intake valve is connected downstream of a straight intake passage, a flow passage control member that protrudes into the spiral passage as the engine rotational speed increases. is provided, and when the bottom surface of the flow path control member protrudes into the spiral path,
1. An intake device for an internal combustion engine, characterized in that the air intake device for an internal combustion engine is formed in a shape that smoothly extends to a ceiling wall of a spiral passage and has a downward slope angle in a circumferential direction larger than that of the ceiling wall.